Improvement in gas-burners



P. KELLER, Gs-Burnes;

Patented oct. 6,1a74.

Agf; aw? u UNITED STATES .PATENT GEEICEo PETER KELLER, 0E NE'w YORK, N.Y.

IMPROVEMENT IN GAS-BURNERS.

Speccation forming pait of Letters Patent No. 1 55,732, dated October 6,1374 application filed g April 30, 1874.

` To all whom t may concern:

Be it known that I, PETER KELLER, of the city, county, and State of NewYork, have invented a new and useful Improvement in Gas -Burners; and Ido hereby declare the following to be a full, clear, and exactdescription thereof, which will enable those skilled in the art to makeand use the same, reference being had p to the accompanying drawing,forming part of this specication, in which drawing- Figure l representsavertical central section of my burner. Fig. 2 is a side view thereof.Fig. 3 is a transverse section in the line x a', Fig. l.

Similar letters indicate corresponding parts.

This invention consists in the arrangement, in a gasburner, of agravitating check-valve for regulating the flow or supply of gas, whichvalve is iitted upon a notched or serrated seat in the interior of theburner, and guided in its movement on a stem rising fromaplate arrangedwithin the lower chamber of the base-section., in such a manner as tofacilitate the lifting of the valve, and to preserve or maintain theflame when the pressure of the gas is insuiiicient to lift the valve oifof its seat, as hereinafter explained.

In the drawing, the letters A B designate two parts or sections of agas-burner made according to my invention, the lower or valve section Abeing provided with an internal thread for screwing upon a gas-pipe,while the upper or burner section B is provided with a like thread forscrewing vupon the valve'section.- The said valve-section A is stepped,so as to form shoulders a b c, the lower one, a, of which constitutesthe abutment of the burner-section B. lIhe upper and inner shoulder, c,which is the upper rim of the valvesection A, forms a circular seat forthe valve D. In or upon this last-named rim or valveseat c are notchesor serrations d. Above the middle step or shoulder, b, between the twosections A B, is a space or chamber, E, as shown, for the working of thevalve D. This valve consists of a cup-shaped disk,`of sheet metal orother suitable material, and is guided upon'a stem, e, which is held ina cross-bar Y or star-shaped plate, f, arranged inthe lower chamber ofthe base-section'A, A sliding motion of the valve upon this stem e ispossible to such an extent as the area of the chamber E will permit.When in its normal position the weight or gravity of the valve willcause it to rest or bear upon its seat c; but as soon as the pressure ofthe gas rises, and becomes sufficiently great to overcome such weight,the valve is lifted or moved away from its seat, to permit the emissionor passage of the gas under and around it into the chamber E, whence thegas passes into the section B, and to the top of the burner.

By reason of the notches l in the surface of the valve-seat, anincreased' effective area of the valve D is presented to the gas in theaction of the latter toward lifting said valve, and thereby the liftingthereof is to a great extent facilitated and insured.

As the pressure of the gas increases, the valve D is lifted to a greaterextent, and the space or distance between it and the upper edge of thegas-chamber E (which space constitutes the outlet of suchgas-chamber) isdecreased or contracted, and by this means it is possible to deliver tothe tip of the burner a regular and uniform iiow of gas independent ofthe pressure in the gas-supply pipe. y

If the pressure of the gas falls, and is insufficient to lift the valveout of its normal position upon the rim or seat c, the notches d thereinwill allow of an indirect and limited emission of gas to the chamber Eand to the tip of the burner, so as to maintain the llame. A

The valve in its upward movement by the pressure of the gas is arrestedby the shoulder g, which constitutes the upper edge ofthe gas-chamber E5 and, if desired, this shoulder may also be provided with notches d, toallow of a roundabout iow of gas. By this means the supply of gas to thetip of the burner is kept up at all times, irrespective of the positionof the valve.

What I claim as new, and desire to secure by Letters Patent, is-

In a gas-burner composed of two sections, the lower section, A, formedwith the shoulders a b c, and serrations d, in combination with theupper section, B, having shoulder g, and with the cup-shaped valve D,sliding on the ste-m c rising from the plate f, substantially as hereinshown, for the purpose specied.

This specification signed bynie this 20th day of April, 1874. PETERKELLER.

Witnesses;

E. F. KASTENHUBER,

CHAS. WAHLERs.

